This is a brief overview of OneSIMCard and how to get the information you will need if you wish to port your phone number out to a different company. You can use the information below to get your OneSIMCard account number and password.
Contact Info
Customer Service: 1-617-313-8888
Hours: 24/7 Customer Service
- Sales: N/A
- Dealer Support: N/A
- Fraud: N/A
- Insurance: N/A
- Porting Department: N/A
- Tech Support: N/A
Carrier(s) used by OneSIMCard
- (CDMA): NO
- (GSM-A): AT&T
- (GSM-T): T-Mobile
- (PCS): NO
- (Other): NO
OneSIMCard Porting Instructions
This carrier/MVNO does not support porting of your phone number.
Notes: OneSIMCard provides its customers with a phone number based in Estonia as well as a Personal Extra Number based in the US which can be used for 30 days.
Please contact Best Cellular customer service if you need help or can’t find what you’re looking for in our list of United States mobile virtual network operators and wireless communications service providers.